I think Mike Ross can blow it up with either Hulk or Thor in a proper team and prep time + high level match experience + serious mind set. He has those read making capabilities that can allow him to get hits in situations where other people might not be able to with those characters.
Mike's Hulk/Thor aren't even 20% of what those characters are capable of in a proper team. If you watch someone like Sinister/Renegade play Hulk it's the craziest thing ever... you have no idea what to do against that. Try to zone? Hulk gets in with Gamma Charge + assists, then he breaks you. Try to rushdown? Hulk uses his armor, you get killed. Try to play defensively and hold up/back? Get grabbed or command throw, OTG Ankle Slice from X-23 into character kill. Try to pressurize with assists? HEY YO happy birthday with Gamma Charge into X factor j.S 2 characters dead in a blink of an eye. Press a button? That's exactly what Hulk wants you to do. The availability of an OTG assist makes sure that Hulk kills off every touch which is integral to his scare factor.
Thor is more technical and essentially requires that he be in the air at all times. Thor on the ground is not good at all but he has some options. The charged Mighty Strike buff is so good now. Air X factor is a great boost to Thor in general thanks to air XFC -> air command throw on chicken blocks. It's all about learning his better combos, hit confirms from mighty strikes (which is his best move for pretty much everything), moving around with him and developing resets for those crucial moments. The command throw range is also a good plus. Mighty Punish is one of Thor's best defensive options on the ground, one that he needed greatly.
Combo used to have a Cap team he dropped it after one WNF iirc
That was his troll team to use the Captain America infinite on fools. It was hilarious to watch. He also had Skrull on anchor which was crazy.
Marn played Captain America for a small time, did basic stuff with him and performed much better than he had thus far in UMVC3.
We definitely need more Thor and Iron Man players though. Iron Man needs a lot of help though.
For IM to succeed it has to be with the dedication that Clockwork gives to his character with that level of execution and hit confirm skills. People respect Clockwork because he sticks to his characters and believes in them through thick or thin. Right now no one believes in IM the same way.